Development·Learning Path·10 min read
Learn a new codebase without guessing
Use routes, data flow, tests, and recent history to build a reliable mental model.
Follow one user journey
Start at a route or command and trace the components, validation, data access, and persistence it uses. Write down boundaries you can verify.
Read recent changes
Inspect commits around the area to understand active conventions and reasons behind unusual code. Avoid broad refactors until the behavior is clear.
Prove your model
Run a focused test or make a tiny reversible change. Compare the observed behavior with your notes and update the model before larger work.
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